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US3330150A
Expired / Lapsed
US
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Chromatographic analysis process
Assignee: Phillips Petroleum Co
•
Filing: 1963-11-20
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Granted: 1967-07-11
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Expires: 1983-11-20
Abstract
No abstract record available.
Inventors
- 👤 Robert J Lloyd
- 👤 James C Henze
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 13:54
CPC Classifications
G; G01; G01N; G01N30/00; G01N30/02; G01N30/26; G01N30/38; G01N30/46; G01N30/461; G01N30/40
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2868011A
Cited
US3030798A
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US2981092A
Cited
US3120749A
Cited
US3112639A
Cited
US3056278A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-07-10 | 1971-01-09 | 1971-07-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-10 | 1975-01-09 | 1975-07-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-10 | 1979-01-09 | 1979-07-11 | $7700.00 | Window Closed / Lapsed |